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Proceedings Papers

An Analysis of Biomass in Higher Trophic Level of Coastal Ecosystem for Sustainable and Effective System of Biomass Application

Yohei Tsukahara, Naoki Nakatani
Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-008
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View Paper titled, An Analysis of Biomass in Higher Trophic Level of Coastal Ecosystem for Sustainable and Effective System of Biomass Application
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Proceedings Papers

An Integrated Feasibility Study of an Anaerobic Digestion Plant Using Marine Biomass and Food Waste

Kana Kuroda, Yuichiro Keno, Naoki Nakatani, Koji Otsuka
Paper presented at the The Twenty-third International Offshore and Polar Engineering Conference, June 30–July 5, 2013
Paper Number: ISOPE-I-13-023
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View Paper titled, An Integrated Feasibility Study of an Anaerobic Digestion Plant Using Marine Biomass and Food Waste
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Proceedings Papers

A Study On Estimation of Seaweed Bed Restoration Using Deep Ocean Water Discharge With an Enclosed Structure

Atsushi Matsui, Naoki Nakatani, Koji Otsuka, Tetsuo Katsuragi
Paper presented at the The Twenty-first International Offshore and Polar Engineering Conference, June 19–24, 2011
Paper Number: ISOPE-I-11-411
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View Paper titled, A Study On Estimation of Seaweed Bed Restoration Using Deep Ocean Water Discharge With an Enclosed Structure
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Proceedings Papers

Fluctuation of Nutrients In the Estuarine Ecosystem

Rei Arai, Kana Kuroda, Taichi Nishiyama, Natsumi Iwasa, Naoki Nakatani, Koji Otsuka
Paper presented at the The Twenty-first International Offshore and Polar Engineering Conference, June 19–24, 2011
Paper Number: ISOPE-I-11-346
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View Paper titled, Fluctuation of Nutrients In the Estuarine Ecosystem
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Proceedings Papers

Fate of Bacterial Mat In Anoxic Environment For Development of Prediction Model For Seafloor Environmental Assessment: Second Report

Yasuharu Nakajima, Joji Yamamoto, Masahito Ikemoto, Rei Arai, Naoki Nakatani, Tetsuo Yamazaki, Koji Otsuka
Paper presented at the Ninth ISOPE Ocean Mining Symposium, June 19–24, 2011
Paper Number: ISOPE-M-11-039
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View Paper titled, Fate of Bacterial Mat In Anoxic Environment For Development of Prediction Model For Seafloor Environmental Assessment: Second Report
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Proceedings Papers

A Trial of Ecological Risk Assessment For Development of Seafloor Massive Sulfides

Yasuharu Nakajima, Rei Arai, Naoki Nakatani, Tetsuo Yamazaki, Koji Otsuka
Paper presented at the Ninth ISOPE Ocean Mining Symposium, June 19–24, 2011
Paper Number: ISOPE-M-11-031
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View Paper titled, A Trial of Ecological Risk Assessment For Development of Seafloor Massive Sulfides
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Proceedings Papers

Fundamental Study of UV-fluorescence Sensing System For Seafloor Massive Sulfides

Hirokazu Nagano, Rei Arai, Naoki Nakatani, Tetsuo Yamazaki, Daisuke Okanishi
Paper presented at the Ninth ISOPE Ocean Mining Symposium, June 19–24, 2011
Paper Number: ISOPE-M-11-032
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View Paper titled, Fundamental Study of UV-fluorescence Sensing System For Seafloor Massive Sulfides
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Proceedings Papers

Evaluation of Material Circulation System Between Land And Sea Using Exergy Flows

Kana Kuroda, Yuka Inui, Naoki Nakatani, Koji Otsuka
Paper presented at the The Twenty-first International Offshore and Polar Engineering Conference, June 19–24, 2011
Paper Number: ISOPE-I-11-516
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View Paper titled, Evaluation of Material Circulation System Between Land And Sea Using Exergy Flows
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Journal Articles

Measuring Instrument For Dissolved Inorganic Nitrogen And Phosphate Ions

Rei Arai, Kazuhiro Akita, Taichi Nishiyama, Naoki Nakatani, Koji Otsuka, Takeichi Nishiyama
Journal: International Journal of Offshore and Polar Engineering
Publisher: International Society of Offshore and Polar Engineers
Int. J. Offshore Polar Eng. 21 (01).
Paper Number: ISOPE-11-21-1-044
Published: 01 March 2011
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View article titled, Measuring Instrument For Dissolved Inorganic Nitrogen And Phosphate Ions
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Proceedings Papers

Fate of Bacterial Mat In Anoxic Environment For Development of Prediction Model For Seafloor Environmental Assessment: First Report

Yasuharu Nakajima, Masahito Ikemoto, Rei Arai, Naoki Nakatani, Tetsuo Yamazaki, Koji Otsuka, Takasada Ishii
Paper presented at the The Twentieth International Offshore and Polar Engineering Conference, June 20–25, 2010
Paper Number: ISOPE-I-10-120
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View Paper titled, Fate of Bacterial Mat In Anoxic Environment For Development of Prediction Model For Seafloor Environmental Assessment: First Report
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Proceedings Papers

Development of Measurement Instrument of Dissolved Inorganic Nitrogen And Dissolved Inorganic Phosphorus

Rei Arai, Kazuhiro Akita, Taichi Nishiyama, Naoki Nakatani, Koji Otsuka, Takeichi Nishiyama
Paper presented at the The Twentieth International Offshore and Polar Engineering Conference, June 20–25, 2010
Paper Number: ISOPE-I-10-322
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Proceedings Papers

A Consideration On In-situ Measurement Method of Matters At Sea Area

Rei Arai, Taichi Nishiyama, Natsumi Iwasa, Naoki Nakatani, Koji Otsuka, Tetsuo Yamazaki
Paper presented at the The Twentieth International Offshore and Polar Engineering Conference, June 20–25, 2010
Paper Number: ISOPE-I-10-313
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View Paper titled, A Consideration On In-situ Measurement Method of Matters At Sea Area
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Proceedings Papers

Biomass Quantification of Ecosystems Around Seafloor Massive Sulfide Deposit With Image Analysis

Naoki Nakatani, Masahito Ikemoto, Rei Arai, Tetsuo Yamazaki
Paper presented at the Eighth ISOPE Ocean Mining Symposium, September 20–24, 2009
Paper Number: ISOPE-M-09-044
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View Paper titled, Biomass Quantification of Ecosystems Around Seafloor Massive Sulfide Deposit With Image Analysis
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Proceedings Papers

Effects of Microtopography On Mining Possibility of Cobalt-rich Manganese Crusts

Naoki Nakatani, Koji Goto, Rei Arai, Tetsuo Yamazaki
Paper presented at the Eighth ISOPE Ocean Mining Symposium, September 20–24, 2009
Paper Number: ISOPE-M-09-045
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View Paper titled, Effects of Microtopography On Mining Possibility of Cobalt-rich Manganese Crusts
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Proceedings Papers

Combined Analysis of Ecology And Economy of Manganese Nodule Mining

Naoki Nakatani, Amon Yamada, Rei Arai, Tetsuo Yamazaki
Paper presented at the Eighth ISOPE Ocean Mining Symposium, September 20–24, 2009
Paper Number: ISOPE-M-09-046
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View Paper titled, Combined Analysis of Ecology And Economy of Manganese Nodule Mining
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Proceedings Papers

Distribution Characteristics of Chemosynthetic Communities Around Seafloor Massive Sulfide Deposits

Tetsuo Yamazaki, Masahito Ikemoto, Naoki Nakatani, Rei Arai
Paper presented at the The Nineteenth International Offshore and Polar Engineering Conference, July 21–26, 2009
Paper Number: ISOPE-I-09-318
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View Paper titled, Distribution Characteristics of Chemosynthetic Communities Around Seafloor Massive Sulfide Deposits
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Proceedings Papers

Estimation Method For Arrival Directions of Radio Waves to Measure the Surface Current of Sea Using VHF Radar On Vessel

Rei Arai, Naoki Nakatani, Kentaro Sachi, Tomoki Yamada, Taketoshi Okuno, Tetsuya Hamano
Paper presented at the The Nineteenth International Offshore and Polar Engineering Conference, July 21–26, 2009
Paper Number: ISOPE-I-09-543
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View Paper titled, Estimation Method For Arrival Directions of Radio Waves to Measure the Surface Current of Sea Using VHF Radar On Vessel
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Journal Articles

Automatic Measurement of Dissolved Inorganic Nitrogen Ions In Coastal Field Using Simplified Flow Injection Method

Rei Arai, Koji Tada, Naoki Nakatani, Taketoshi Okuno, Koichi Ohta
Journal: International Journal of Offshore and Polar Engineering
Publisher: International Society of Offshore and Polar Engineers
Int. J. Offshore Polar Eng. 19 (01).
Paper Number: ISOPE-09-19-1-071
Published: 01 March 2009
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View article titled, Automatic Measurement of Dissolved Inorganic Nitrogen Ions In Coastal Field Using Simplified Flow Injection Method
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Proceedings Papers

Automatic Measurement of Dissolved Inorganic Nitrogen Ions In Coastal Field Using a Simplified Flow Injection Method

Rei Arai, Koji Tada, Naoki Nakatani, Taketoshi Okuno, Koichi Ohta
Paper presented at the The Eighteenth International Offshore and Polar Engineering Conference, July 6–11, 2008
Paper Number: ISOPE-I-08-446
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View Paper titled, Automatic Measurement of Dissolved Inorganic Nitrogen Ions In Coastal Field Using a Simplified Flow Injection Method
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Proceedings Papers

Measurement Method For Nutrient By Ultraviolet Spectrometry

Rei Arai, Naoki Nakatani, Taketoshi Okuno
Paper presented at the The Eighteenth International Offshore and Polar Engineering Conference, July 6–11, 2008
Paper Number: ISOPE-I-08-105
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View Paper titled, Measurement Method For Nutrient By Ultraviolet Spectrometry
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